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ABB MT-91-ARCFPA Arc Flash Protection Relay
Original price was: $3,620.00.$1,199.00Current price is: $1,199.00.
The ABB MT-91-ARCFPA is a specialized arc flash protection relay, designed to detect arc flash incidents in low-to-medium voltage electrical systems within milliseconds, triggering rapid circuit interruption to minimize equipment damage and safety risks.
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Description
| Parameter | Details |
|---|---|
| Model | MT-91-ARCFPA |
| Manufacturer | ABB |
| Product Type | Arc Flash Protection Relay |
| Core Functions | Arc flash detection (light + current-based); millisecond-level fault response; multi-zone protection; fault event logging; remote status monitoring |
| Detection Method | Dual-input: UV/visible light sensor (arc detection) + current sensor (fault current verification) |
| Response Time | ≤ 5 ms (from arc detection to output signal) |
| Protection Zones | Up to 8 configurable zones (via external sensors) |
| Input Interfaces | 8 light sensor inputs (for zone detection); 2 current transformer (CT) inputs (5 A secondary) |
| Output Interfaces | 4 relay outputs (250 V AC/30 V DC, 5 A max; for circuit breaker tripping); 1 alarm relay output |
| Communication Interface | RS-485 (Modbus RTU; for remote monitoring and parameter setting) |
| Power Supply | 24 V DC ±15% |
| Power Consumption | 8 W max |
| Operating Temperature Range | -20°C to +70°C |
| Storage Temperature Range | -40°C to +85°C |
| Relative Humidity | 5% – 95% RH (non-condensing) |
| Protection Rating | IP40 (front panel); IP20 (rear terminals, when installed in cabinet) |
| Dimensions (W × H × D) | 144 mm × 100 mm × 180 mm |
| Weight | 1.2 kg |
| Mounting Type | Panel-mounted (19-inch rack, 1U height) |
| Certifications | CE, UL, IEC 61850 (for substation integration), IEC 62271-205 (arc flash protection standard) |
| Key Features | LCD display (shows zone status, fault data); LED indicators (power, alarm, zone activation); password protection for settings; self-diagnostic function |
| System Compatibility | ABB low/medium voltage circuit breakers; external arc flash light sensors; substation automation systems; SCADA |
| Applications | Low/medium voltage switchgear; industrial power distribution panels; data center electrical systems; renewable energy (solar/wind) inverter cabinets |
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